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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1815222Generated: October 31, 2026

5-Fluoroisatin → 5-fluoro-1,3-dihydro-2H-indol-2-one

https://huagongshe.com/reaction/1815222

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-FluoroisatinHCID 236566—
SolventHydrazine hydrate (1:1)HCID 24654—
Product5-fluoro-1,3-dihydro-2H-indol-2-oneHCID 3731012—

Reaction Steps

5-Fluoroisatin (8.2 g) was dissolved in 50 mL of hydrazine hydrate and refluxed for 1.0 hr. The reaction mixtures were then poured in ice water. The precipitate was then filtered, washed with water and dried in a vacuum oven to afford the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06878733B1
Source datasetuspto-grants-2005_04
ORD IDord-f81faa677adb4599a6f30037b396b925
Source noteuspto-grants-2005_04